Coinone announced that it will delist PortalToBitcoin (PTB) at 3 PM on June 22. PortalToBitcoin was designated as an investment warning item on March 23 for failing to timely disclose important matters that could significantly affect the value of the virtual asset by its issuer or operator, or for arbitrarily changing them. The exchange explained that after reviewing the explanatory materials, no information was found that could resolve the reasons for its designation as an investment warning item.